Annals of Thoracic Medicine Official publication of the Saudi Thoracic Society, affiliated to King Saud University
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Year : 2014  |  Volume : 9  |  Issue : 1  |  Page : 8-13

Incidence and predictors of readmission to the cardiac surgery intensive care unit: A retrospective cohort study in Greece

1 Cardiac Surgery ICU, "Evangelismos" General Hospital of Athens, Athens, Greece
2 Department of Anaesthesiology, University Hospital of Heraklion, Crete, Greece
3 Cardiothoracic department, Liverpool Heart And Chest Hospital, Liverpool, United Kingdom
4 Faculty of Nursing, National & Kapodistrian University of Athens, Athens, Greece

Correspondence Address:
Konstantinos Giakoumidakis
45-47 Ipsilantou Street, 10646, Athens
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/1817-1737.124412

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Introduction: Readmission in the intensive care unit (ICU) is a significant morbidity index, which has been related to poor patient outcomes Aim: To identify the preoperative and intraoperative risk factors for readmission in the cardiac surgery ICU. Methods: We conducted a retrospective cohort study of 595 consecutive patients who were admitted to the cardiac surgery ICU of a tertiary hospital of Athens - Greece during the one-year period (September 2011-September 2012). Data collection was carried out, retrospectively, by the use of a short questionnaire and based on the review of medical and nursing patient records at December 2012. Results: The incidence of ICU readmission was 3.7% (22/595). Respiratory disorders were the main reason for readmission (45.4%). Readmitted patients had a significantly higher in-hospital mortality compared to those requiring no readmission (P < 0.001). Multivariate analysis revealed that female gender [for males odds ratio (OR) 0.37, 95% confidence interval (CI) 0.15-0.89], high logistic EuroSCORE (OR 1.02, 95% CI 1.00-1.04), prolonged cardiopulmonary (CPB) duration (OR 1.01, 95% CI 1.00-1.02) and preoperative renal failure (OR 1.02, 95% CI 1.00-1.05) were the independent risk factors for readmission to the cardiac surgery ICU. Conclusions: One intraoperative and three preoperative variables are associated strongly with higher probability for ICU readmission. Shorter CPB duration could contribute to lower ICU readmission incidence. In addition, the early identification of high risk patients for readmission in the cardiac surgery ICU could encourage both the more efficient healthcare planning and resources allocation.

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